diff options
| author | Mathieu Briand <mbriand@witekio.com> | 2017-03-03 14:49:23 +0100 |
|---|---|---|
| committer | Jerome Forissier <jerome.forissier@linaro.org> | 2017-04-21 13:59:17 +0200 |
| commit | 3b3a4611ebbe6a749d76152b35236aaa5b99977e (patch) | |
| tree | 6299bca9afb604a5336d5648e6e8ff854842e08b /core/drivers/gic.c | |
| parent | 38f2377287f3f6dafde5200d4ad3f4762c530e1c (diff) | |
core: arm: Do not handle unsupported interrupts
Trying to handle an interrupt with an ID above the maximum will result
in a kernel panic as the itr_handle() function will try to disable this
unhandled interruption.
Interrupts with a high ID will now be simply ignored.
Signed-off-by: Mathieu Briand <mbriand@witekio.com>
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Diffstat (limited to 'core/drivers/gic.c')
| -rw-r--r-- | core/drivers/gic.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/core/drivers/gic.c b/core/drivers/gic.c index 93979a0a..459129cf 100644 --- a/core/drivers/gic.c +++ b/core/drivers/gic.c @@ -81,8 +81,6 @@ /* Maximum number of interrups a GIC can support */ #define GIC_MAX_INTS 1020 -#define GIC_SPURIOUS_ID 1023 - #define GICC_IAR_IT_ID_MASK 0x3ff #define GICC_IAR_CPU_ID_MASK 0x7 #define GICC_IAR_CPU_ID_SHIFT 10 @@ -380,10 +378,10 @@ void gic_it_handle(struct gic_data *gd) iar = gic_read_iar(gd); id = iar & GICC_IAR_IT_ID_MASK; - if (id == GIC_SPURIOUS_ID) - DMSG("ignoring spurious interrupt"); - else + if (id < gd->max_it) itr_handle(id); + else + DMSG("ignoring interrupt %" PRIu32, id); gic_write_eoir(gd, iar); } |